016期：（（01,07,11,15,18,20,23,24,25,27,31,38,42,44,46,49））开：20准
017期：（（05,06,08,09,12,13,14,21,25,28,36,39,40,43,44,49））开：40准
018期：（（02,04,06,08,10,12,17,18,20,26,28,32,37,39,44,48））开：10准
019期：（（02,03,10,11,13,15,16,20,21,24,35,42,44,45,47,49））开：04错
020期：（（02,03,04,07,19,23,31,32,33,36,38,39,41,45,46,48））开：//